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[23.128.96.18]) by mx.google.com with ESMTP id g2si3562670edn.508.2021.01.08.01.19.28; Fri, 08 Jan 2021 01:19:52 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@google.com header.s=20161025 header.b=di5xAHbQ; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728082AbhAHJST (ORCPT + 99 others); Fri, 8 Jan 2021 04:18:19 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34750 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728023AbhAHJSS (ORCPT ); Fri, 8 Jan 2021 04:18:18 -0500 Received: from mail-qk1-x735.google.com (mail-qk1-x735.google.com [IPv6:2607:f8b0:4864:20::735]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 13D06C0612F4 for ; Fri, 8 Jan 2021 01:17:38 -0800 (PST) Received: by mail-qk1-x735.google.com with SMTP id z11so7905187qkj.7 for ; Fri, 08 Jan 2021 01:17:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=xJnl+FZ1gpOcd35fdEFuMTp9+v183tYb0UiM+fOy7cU=; b=di5xAHbQJBIzcIWF3bZji77qGMchbDheH0ljp9OeVzxTJsTkb1EEh34uHGhcXd+m8m 5iqambvjFTe572A7AoC16IwDHfrRhZxHxhlJzWPmrO1wJUB205Y1INzACZRzIQbU9YXZ /ypBV5AK+hR/1EyVAzOpzWPZOenaDnRLgHgUW80KsjG1DpqABnI+g6n/LxGbUjGS2lHg 6E6v8FlKp76BiO+yl2ER5CEkut0OvIkrLvOUmf3a7890RChpZNYop62WodONPAA2yvZM RGZOXFC2C1OwJlfrLDF60NCJEYq5gN5LAhZAnaTix/0HE5uGhgns7qZ8nbufaKH37Nix SIpA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=xJnl+FZ1gpOcd35fdEFuMTp9+v183tYb0UiM+fOy7cU=; b=C2q4mnvO5tbKdvHYVY5c8td2ieSthXT431vom4HZn4sWnili5pVPEZof1YGX59Ojwf GlUnCXmdUy/Uw5KVgr+V0ltnGXctAljtVk/9s/D0VAQLmzwuVS/vVwthV7tHs9E5F7p8 vnJsWcPXJvnfQ3FIAZ1AUGGcB2LeYLmimJGyjD5pwqBgFNwvQcnVw95nc2QYdkWrvkkD VpwQ2r0FZD/iYmjIYg+onIVgREV4nGTSrEr9Tgd6NRDO/Hf6a+GbijUCw2SL61CC+AlW +lzcsObD4Q9DB8gXBuD4DmI8+BYAMgl9HyuStYlM4PLIMt4JDmkZUAonTnOFHt7H+m// gk5g== X-Gm-Message-State: AOAM5303464Fv1DrZgJ9+oUTPc+syqS1ZWU1BzTDWICtSvx/Y/G+Yoic clXa4938zrC9BDUpchZtY3aopQMZcJpAPmb0cExAaALjiFmDJQ== X-Received: by 2002:a37:4285:: with SMTP id p127mr2790403qka.501.1610097456944; Fri, 08 Jan 2021 01:17:36 -0800 (PST) MIME-Version: 1.0 References: <00000000000053e36405b3c538fc@google.com> <0000000000008f60c505b84f2cd0@google.com> In-Reply-To: <0000000000008f60c505b84f2cd0@google.com> From: Dmitry Vyukov Date: Fri, 8 Jan 2021 10:17:25 +0100 Message-ID: Subject: Re: KASAN: null-ptr-deref Write in start_transaction To: syzbot Cc: syzkaller-bugs , LKML , linux-btrfs@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jan 7, 2021 at 2:11 PM syzbot wrote: > > syzbot suspects this issue was fixed by commit: > > commit f30bed83426c5cb9fce6cabb3f7cc5a9d5428fcc > Author: Filipe Manana > Date: Fri Nov 13 11:24:17 2020 +0000 > > btrfs: remove unnecessary attempt to drop extent maps after adding inline extent > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13ddc30b500000 > start commit: 521b619a Merge tag 'linux-kselftest-kunit-fixes-5.10-rc3' .. > git tree: upstream > kernel config: https://syzkaller.appspot.com/x/.config?x=61033507391c77ff > dashboard link: https://syzkaller.appspot.com/bug?extid=6700bca07dff187809c4 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14a07ab2500000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10fe69c6500000 > > If the result looks correct, please mark the issue as fixed by replying with: > > #syz fix: btrfs: remove unnecessary attempt to drop extent maps after adding inline extent > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection #syz fix: btrfs: remove unnecessary attempt to drop extent maps after adding inline extent